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<div><span class="187511906-19082011"><font size="2" face="Arial">I think what is
rather exceptional in student language mode thinking, is that you are trying/
being able to create a&nbsp; kind of<br>laboratory environment where each
learning step can be controlled. Hard to say whether it is a good idea or not
per se, but the problems seem to raise when you try to step off the lane. It is
a unique situation to be able to do that. </font></span></div>
<div><span class="187511906-19082011"><font size="2" face="Arial"></font></span>&nbsp;</div>
<div><span class="187511906-19082011"><font size="2" face="Arial">If new features are
introduced as you move further (gaining new skills in games :) but never go
back, then it should be mostly OK, except that it may make the of-the-lane
learning&nbsp;more challanging. I could think of two situations like
that</font></span></div>
<div><span class="187511906-19082011"><font size="2" face="Arial">&nbsp;- Wanting to
create a new lane of learning for a special purpose or&nbsp;experimenting
whether some other order might be more optimal</font></span></div>
<div><span class="187511906-19082011"><font size="2" face="Arial">&nbsp;- Learning
through colleages outside the lane ("ok, you don't have that feature available,
yet... What I usually do in these situations...")</font></span></div></div></blockquote><div><br></div>Yes, that's one of the more reasonable criticisms that has been leveled at the PBD project: the software supports one specific sequence of topics, and if an instructor wants to introduce things in a different order (e.g. mutation &amp; I/O early), the software ALLOWS that but doesn't really help. &nbsp;Even some people on this list have been known to start their courses in Advanced Student or #lang racket because there was some feature they wanted to introduce early.</div><div><br></div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Stephen Bloch</div><div><a href="mailto:sbloch@adelphi.edu">sbloch@adelphi.edu</a></div></div></span></span>
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